uranium 238, n.
the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239
<noun.substance>
uranium 238
semantic pointers
hypernym
Word
the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239
<noun.substance>
uranium 238